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(No Model.)

2 Sheets-Shet 1. Z. P. BOYER. QONDUIT FOR TRACTION OR ENDLESS CABLE RAILWAYS.

PatentedMar. 15, 1887.

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' V Z. P. BOYER. GONDUI TI'OR TRACTION OR ENDLESS CABLE RAILWAYS.

No. 359,421. Patented Mar. 15,1887.

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UNITE STATES PATENT OFFICE.

ZACCUR PRALL BOYER, OF PHILADELPHIA, PENNSYLVANIA,ASSIGNOR TO THE UNITEDSTATES CABLE MOTOR CONSTRUCTION COMPANY, OF SAME PLACE.

CONDUIT FOR TRACTION-=ROP E OR ENDLESS-CABLE RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 359,421, dated March15, 1887.

Application filed October 17, 1684. Serial No. 145,791. (No model.)

To all whom it may concern.-

Be it known that I, ZACOUR PRALL BOYER, a citizen of the United States,residing at Philadelphia, Pennsylvania, have invented a new and usefulImprovementin a Conduit for Traction-Rope or Endless-Cable Railways forPassing Around Curves, of which the following is a'specification.

My invention relates to a new and useful improvementin a conduitfortraction-ropeorendless-cable railways for passing around curves, forthe purpose and object of aiding the passage of traction-railway cablesaround the said curves. I attain this object by the mechanismillustrated in the accompanying drawings, which form part of thisspecification,in which- W Figure 1 represents a longitudinal section ofthe device constructed in manner and form as shown. Fig. 2 is a top viewof the conduit in manner and form as shown. Fig. 3 is an end or verticalcross-section view of the yoke used in the conduit, with horizontal andvertical pulleys in place. Fig. 4 is a half vertical or endcross-section view of the device, showing slot beams and braces in placewith double nuts in place.

Similar letters throughout the figures designate corresponding parts.

The device consists, principally,ofa conduit with proper slot beams andbraces, a plate having the proper curve and horizontal and verticalpulleys so adjusted as to accelerate the passage of a cable aroundcurves.

In Fig. 1, AA A are the yokes, bent into a form approximating the formof a horse shoe, they being set at suitable distances from each other atangles proper to the radii of the curves intended to be overcome. B Bare the Z-beams or slot-rails, bent into the form to suit the curves. 0C are the stringers or sills, upon the tops of which rests the iron orsteel rail, and which are secured to theends of the yokes, as shown inFig. 3. E is a plate, of steel or other suitable metal, secured not tothe sides of the conduit, but to the body of the horseshoe-yoke, onproperly-formed brackets, slightly inclined to suit the curves of theconduits, and with slightly rounded corners, so adjusted over horizontalpulley F, for the purpose,

first, and mainly, to receive the horizontal wheel or wheels of the gripwhen a car is passing around the curve; and, secondly, after the passageof said car, to receive any vibration in the cable,andthen to guide thecable upon the pulleys H and G. It is apparent? that in use the plate Eneed not necessarily be exactly in the form as shown in the drawings, assome slight alterations may be made in the form of -said plate to betteraccomplish the purposes above described. D is the bracket secured to thelower center of the arch of the yoke for the purpose of securingvertical pulley G, as shown in Fig. 3. G is a vertical pulley for thepurpose of preventing the friction or rubbing of the rope, or cablewhile traveling around the curve.

The axes of vertical pulleys G and horizontal pulleys F are in Figs. 1and 2 represented in a vertical transverse plane. In Fig. 3, however,the vertical pulley is shown in section and the horizontal in fulllines. This might imply that their axes were not as represented in Figs.1 and 2. The design is such that the margins of said pulleys areimmediately adjacent to each other. These pulleys are to be ofsubstantialidentity and continuity of curvature across the peripheries,and the axes of the pulleys are to be so placed that the cable cannot byany ordinary vibration escape the pulleys.

Fig. 2, A A A shows the yokein place with the pulleys in position. N isthe rope or cable in position when passing around a curve.

Fig. 3, C C shows the rails located upon, and sills in place on the endof the vertical crosssection of the yoke. A A is the yoke bent into theform of a horseshoe. D is the bracket, in

which rests the horizontal pulley F and vertical pulley G. E is theinclined plate above described shown in section. I I are the brace orstay bolts or rods connecting the yokes and Z-beams in manner and formas shown. K K are the nuts upon each side of the slot-beams for thepurpose of preventing any variation of the slot and to hold the Z-beamsin a rigid position, as shown in the figure.

Heretofore provision has only been made for preventing the closing ofthe slot-irons but in my device, the outer ends of the brace-rods Ibeing securely fixed against movement in any direction by applying nutsto said brace-rods inside and outside of the slot-irons,it is obviousthat by setting said nuts either way the slotirons can be sprung eitherway to open or close the slot.

Fig. 4, B B are the Z or slot beams. K K are the nuts. I I are the bracerods or bolts.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s

1. The combination, with the yokes A A and the slot-irons B B, set toaccommodate the radii of a curve, of the brace-rods I I, adjustable bynuts thereon inside and outside of the slot-irons, and the inclinedplate E, adjusted and secured to the body of the yokes and the axes ofthe horizontal pulley F and the vertical pulley G, all substantially asshown and described.

2. The combination, with the yokes and the slot-irons, of the braceshaving their outer l ends rigidly fixed to the yokes and their innerends provided with nuts within and outside of the slot-irons foradjustment in either direc- 25 tion, substantially as shown anddescribed.

3. The combination of the horizontal and vertical pulleys having theperipheries so grooved and themselves being so placed that the movingcable in its up-and-down movement shall be taken by one from the other.

4. The combination, withthe horizontal pulleys, of the inclined plate E,properly curved and extending along the curved portion of the tube,substantially as shown and described.

5. The combination, with the pulleys Fand G, of the inclined plate E, ofproper shape, securely fixed to the body of the horseshoeyoke, for thepurposes described.

ZACGUR PRALL BOYER.

lVitnesses:

Gno. M. Roxns, W. K. Woonnonv.

